Permanent Waving

What is the primary chemical used in the process of permanent waving in hairdressing?

• Ammonium thioglycolate

• Sodium chloride

• Hydrogen peroxide

• Ethanol

Which bond in the hair structure is primarily broken and reformed during the permanent waving process?

• Hydrogen bonds

• Disulfide bonds

• Peptide bonds

• Ionic bonds

What is the role of neutralizer in the permanent waving process?

• To soften the hair

• To break disulfide bonds

• To reform disulfide bonds

• To add color to the hair

Which of the following is a common method used to apply permanent wave solution to hair?

• Spraying

• Dipping

• Rolling

• Brushing

What is the typical pH range of a permanent wave solution?

• 2.0 - 3.0

• 4.5 - 5.5

• 7.0 - 8.0

• 9.0 - 9.6

In the context of permanent waving, what does the term 'processing time' refer to?

• The time taken to apply the solution

• The time taken for the hair to dry

• The time the solution is left on the hair

• The time taken to rinse the solution

Which scientific principle explains the change in hair shape during permanent waving?

• Osmosis

• Chemical reaction

• Diffusion

• Evaporation

Tags

NGSS.HS-PS1-4

What is the effect of using a perm solution with a higher pH on hair?

• It makes hair more brittle

• It enhances hair color

• It strengthens hair

• It softens hair

Which of the following is a safety precaution to consider during the permanent waving process?

• Wearing gloves

• Using a hair dryer

• Applying conditioner

• Using cold water

What is the main purpose of using rods in the permanent waving process?

• To add color

• To shape the curls

• To dry the hair

• To straighten the hair